Thanks Robert,I keep reading posts/articles referencing "drift alignment". I understand what it is but not having a GEM go-to mount, I havn't really paid any attention to technique. This does help lots! I eventually will go the rout of a GEM mount for my refractors.

Hey all, thanks for the comments. Sorry it has taken so long to respond. GEM mounts function slightly different in respects to the OTA positions as well as the need to "flip" the OTA direction once it is moves from East to West. When this occurs, your image is now reversed. Therefore, depending on whether or not you "flip" the OTA over, your adjustments may or may not change. A fork mounted scope never reverses the image while moving from E to W and eliminates the possibility of having to reverse your adjustments.

Hey all, do you think this method will work on a curved bolt barn door tracker like this? I believe the barn door tracker is rotating along the RA axis. I have my barn door mounted to a pan/tilt head on a a tripod so I can adjust the azimuth and altitude albeit not precisely.

The DARV instructions states to move the mount to the west and then to the east. Is moving W or E the same as rotating about the RA axis CW or CCW?